Try this homemade Betty'S Beef Casserole recipe the whole family will love. Made with Campbell's onion soup, cream of mushroom soup, green pepper and mu…
This Betty'S Beef Casserole relies on simple, everyday ingredients such as campbell's onion soup, cream of mushroom soup, green pepper, cut up and sliced mushrooms. It comes together quickly and makes 4 servings, at about 735 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
It works as a light main on its own or as a starter alongside crusty bread, and it's just as good for a cozy night in as it is for feeding a crowd. Leftovers keep well, so it's a smart choice for meal prep too.
Updated Jun 30, 2026